2001
Mathematics
67ca00ce0c643c71d77dee1f
a sector of a circle of radius 7.2cm which subtends an angle of 300° at the centre is used to form a cone. What is the radius of the base of the cone?
A.
8cm
B.
6cm
C.
9cm
D.
7cm
Correct Answer: 6cm
Explanation
(r/L) = (θ/360°) Given θ = 300, and L = 7.2cm, => r = (300 x 7.2)/360 r = 6cm
(r/L) = (θ/360°) Given θ = 300, and L = 7.2cm, => r = (300 x 7.2)/360 r = 6cmTHIS WEEK's
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